Start building amazing projects with the Raspberry Pi right out of the box About This Book Explore the vast range of opportunities provided by Raspberry Pi and other hardware components such as a webcam, the Pi camera, and sensors Get hands-on experience with coding, networking, and hardware with the Raspberry Pi platform Learn through ample screenshots that offer a play-by-play account of how to implement Raspberry-Pi-based real-life projects Who This Book Is For What's the best way to learn how to use your Raspberry PiBy example! If you want something exciting to do whilst getting to grips with what your Pi can offer, this is the book for you. With both simple and complex projects, you'll create a wide variety of cool toys and functions with your Raspberry Pi - all with minimal coding experience necessary. What You Will Learn Set up your Raspberry Pi and get it ready for some interesting real-life projects Work with images, videos, webcams, and the Pi camera and create amazing time-lapse videos Explore the amazing world of Minecraft Pi Get to know how to use PiGlow for GPIO programming Interface your Pi with Grove Sensors and implement IoT applications Build your own cluster with Raspberry Pi Understand the networking and network programming fundamentals In Detail Want to put your Raspberry Pi through its paces right out of the boxThis tutorial guide is designed to get you learning all the tricks of the Raspberry Pi through building complete, hands-on hardware projects. Speed through the basics and then dive right in to development! Discover that you can do almost anything with your Raspberry Pi with a taste of almost everything. Get started with Pi Gaming as you learn how to set up Minecraft, and then program your own game with the help of Pygame. Turn the Pi into your own home security system with complete guidance on setting up a webcam spy camera and OpenCV computer vision for image recognition capabilities. Get to grips with GPIO programming to make a Pi-based glowing LED system, build a complete functioning motion tracker, and more. Finally, get ready to tackle projects that push your Pi to its limits. Construct a complete Internet of Things home automation system with the Raspberry Pi to control your house via Twitter; turn your Pi into a super-computer through linking multiple boards into a cluster and then add in advanced network capabilities for super speedy processing! Style and approach This step-by-step guide to building Raspberry-Pi-based projects is explained in a conversational and easy-to-follow style. Each topic is explained sequentially in the process of creating real-life projects, and detailed explanations of the basic and advanced features of various Python libraries are also included.

Improve the performance of your PHP application to ensure the application users aren't left waiting About This Book · Make the optimum use of PHP coding to improve your programming productivity · Leverage the potential of PHP for server-side programming, memory management, and object-oriented programming · Packed with real-life examples to help the readers implement concepts as they learn Who This Book Is For This book is for those who have basic experience in PHP programming. If you are developing performance-critical applications, then this book is for you. What You Will Learn · Setup high performance development and production environment for PHP 7 · Discover new OOP features in PHP 7 to achieve high performance · Improve your PHP applications' performance · Attain improved database performance · Benchmark PHP applications to optimize them · Write quality code by learning to improve code reusability, simplicity, and expressiveness · Get rid of the bottlenecks in your PHP 7 applications by writing PHP code optimally · Tackle issues related to web applications, such as high user dependency and large datasets In Detail PHP is a great language for building web applications. It is essentially a server-side *ing language that is also used for general-purpose programming. PHP 7 is the latest version, providing major backward-compatibility breaks and focusing on high performance and speed. This fast-paced introduction to PHP 7 will improve your productivity and coding skills. The concepts covered will allow you, as a PHP programmer, to improve the performance standards of your applications. We will introduce you to the new features in PHP 7 and then will run through the concepts of object-oriented programming (OOP) in PHP 7. Next, we will shed some light on how to improve your PHP 7 applications' performance and database performance. Through this book, you will be able to improve the performance of your programs using the various benchmarking tools discussed. At the end, the book discusses some best practices in PHP programming to help you improve the quality of your code. Style and approach The book is a step-by-step guide to improve the quality of your code in PHP through real-time examples. The book takes a practical approach to improving the quality of your code.

Boost your scientific and analytic capabilities in no time at all by discovering how to build real-world applications with NumPy About This Book Optimize your Python *s with powerful NumPy modules Explore the vast opportunities to build outstanding scientific/ analytical modules by yourself Packed with rich examples to help you master NumPy arrays and universal functions Who This Book Is For If you are an experienced Python developer who intends to drive your numerical and scientific applications with NumPy, this book is for you. Prior experience or knowledge of working with the Python language is required. What You Will Learn Manipulate the key attributes and universal functions of NumPy Utilize matrix and mathematical computation using linear algebra modules Implement regression and curve fitting for models Perform time frequency / spectral density analysis using the Fourier Transform modules Collate with the distutils and setuptools modules used by other Python libraries Establish Cython with NumPy arrays Write extension modules for NumPy code using the C API Build sophisticated data structures using NumPy array with libraries such as Panda and Scikits In Detail In today’s world of science and technology, it’s all about speed and flexibility. When it comes to scientific computing, NumPy tops the list. NumPy gives you both the speed and high productivity you need. This book will walk you through NumPy using clear, step-by-step examples and just the right amount of theory. We will guide you through wider applications of NumPy in scientific computing and will then focus on the fundamentals of NumPy, including array objects, functions, and matrices, each of them explained with practical examples. You will then learn about different NumPy modules while performing mathematical operations such as calculating the Fourier Transform; solving linear systems of equations, interpolation, extrapolation, regression, and curve fitting; and evaluating integrals and derivatives. We will also introduce you to using Cython with NumPy arrays and writing extension modules for NumPy code using the C API. This book will give you exposure to the vast NumPy library and help you build efficient, high-speed programs using a wide range of mathematical features. Style and approach This quick guide will help you get to grips with the nitty-gritties of NumPy using with practical programming examples. Each topic is explained in both theoretical and practical ways with hands-on examples providing you efficient way of learning and adequate knowledge to support your professional work.

Transform your Raspberry Pi into a multi-purpose web server that supports your entire multimedia world with this practical and accessible tutorial! About This Book Host websites, games, and even stream HD videos with the impressive power of Raspberry Pi 2 Get to grips with embedded programming by turning your Pi into the cloud server that can be used to power Internet of Things projects Make the Raspberry Pi 2 the center of your latest tech experiments and discover how it can manage and host resources Who This Book Is For Seeking inspiration for some new tech projectsWant to get more from your Raspberry PiThis book has been created especially for you! What You Will Learn Host your Raspberry Pi as a web server using the minimum power resources Connect your Pi to the Internet and perform network benchmarking Explore the cross-platform features of the Pi as you run Python, Node.JS, ASP.NET, and PHP all in one place Share files over the Internet using your Pi as a file server Turn your Pi into a game server, host and engage into playing Enjoy live HD video streaming and exclusive real-time text overlays In Detail There’s no end to what you can do with a Raspberry Pi – it makes a huge range of tech projects possible. This book shows you how to transform it into a multipurpose web server, able to store and manage resources that lets you build some truly innovative and impressive computing creations. You’ll learn how to use your Raspberry Pi 2 to host a website using a range of different languages, host a game server, store files, and run everything from a media center to a cloud network. If you want to take control of your technological world, start building your own server and find out what’s possible with the Raspberry Pi microcomputer. Begin by getting your Pi set up – follow each step as the book shows you how to prepare a network and configure the additional features that you’ll need to build your projects. Once you’ve done this you’ll dig a little deeper and set up your pi as a file server, making sure it’s built for speed using a range of different tools, including Python, Node.js and ASP.NET. Following this the book shows you how to extend your server to allow you to host games, and stream live HD video before customizing it even further to create a fully-fledged media center. It doesn’t stop there however – the book then dives into the exciting world of the Internet of Things (IoT). You’ll learn how to install Windows IoT onto your Raspberry Pi, the operating system that’s driving embedded software projects all around the world. Once you’ve done this you’ll be ready to explore IoT further, as the book shows you how to use your device to host a cloud network that can form the basis of a wider IoT project. Style and approach Packed with plenty of practical examples that walk you through a number of Raspberry Pi projects, this book is an accessible journey into embedded computing and Internet of Things.

Over 120 practical and easy-to-understand recipes that explain how to use Sass and Compass to write efficient, maintainable, and reusable CSS code for your web development projects About This Book Leverage Sass to make your CSS code maintainable, reusable and prevent code duplications Shorten debug time with Sass when creating complex CSS code for different browsers and devices Write easy and bullet-proof CSS with Compass using this step-by-step and detailed guide Who This Book Is For This book is mainly intended for web developers and designers who are comfortable with CSS and HTML. If you are someone with some experience with CSS, you will find the learning curve of learning Sass syntax to be less steep. Basic knowledge of web development is helpful but you don't have to be a programmer to understand Sass. What You Will Learn Spend less time debugging code Compile Sass code into readable and maintainable CSS Integrate Sass in your own projects Reuse your code to prevent code duplications Write reusable and portable CSS code Make use of pre-built and established code written by other developers Reduce development and maintenance time of your projects Set up a development environment with Gulp In Detail Sass and Compass Designer's Cookbook helps you to get most out of CSS3 and harness its benefits to create engaging and receptive applications. This book will help you develop faster and reduce the maintenance time for your web development projects by using Sass and Compass. You will learn how to use with CSS frameworks such as Bootstrap and Foundation and understand how to use other libraries of pre-built mixins. You will also learn setting up a development environment with Gulp. This book guides you through all the concepts and gives you practical examples for full understanding. Style and approach This book is the perfect mix of essential theory combined with real-life examples and problems, with clear explanations of the more sophisticated Sass concepts. Learn Sass and Compass with practical and well-explained example code. This book follows a problem and solution approach that is convenient to understand and follow.

Master the art of writing beautiful and powerful Python by using all of the features that Python 3.5 offers About This Book Become familiar with the most important and advanced parts of the Python code style Learn the trickier aspects of Python and put it in a structured context for deeper understanding of the language Offers an expert's-eye overview of how these advanced tasks fit together in Python as a whole along with practical examples Who This Book Is For Almost anyone can learn to write working * and create high quality code but they might lack a structured understanding of what it means to be 'Pythonic'. If you are a Python programmer who wants to code efficiently by getting the syntax and usage of a few intricate Python techniques exactly right, this book is for you. What You Will Learn Create a virtualenv and start a new project Understand how and when to use the functional programming paradigm Get familiar with the different ways the decorators can be written in Understand the power of generators and coroutines without digressing into lambda calculus Create metaclasses and how it makes working with Python far easier Generate HTML documentation out of documents and code using Sphinx Learn how to track and optimize application performance, both memory and cpu Use the multiprocessing library, not just locally but also across multiple machines Get a basic understanding of packaging and creating your own libraries/applications In Detail Python is a dynamic programming language. It is known for its high readability and hence it is often the first language learned by new programmers. Python being multi-paradigm, it can be used to achieve the same thing in different ways and it is compatible across different platforms. Even if you find writing Python code easy, writing code that is efficient, easy to maintain, and reuse is not so straightforward. This book is an authoritative guide that will help you learn new advanced methods in a clear and contextualised way. It starts off by creating a project-specific environment using venv, introducing you to different Pythonic syntax and common pitfalls before moving on to cover the functional features in Python. It covers how to create different decorators, generators, and metaclasses. It also introduces you to functools.wraps and coroutines and how they work. Later on you will learn to use asyncio module for asynchronous clients and servers. You will also get familiar with different testing systems such as py.test, doctest, and unittest, and debugging tools such as Python debugger and faulthandler. You will learn to optimize application performance so that it works efficiently across multiple machines and Python versions. Finally, it will teach you how to access C functions with a simple Python call. By the end of the book, you will be able to write more advanced *s and take on bigger challenges. Style and Approach This book is a comprehensive guide that covers advanced features of the Python language, and communicate them with an authoritative understanding of the underlying rationale for how, when, and why to use them.

Build websites and applications using the latest techniques in modern web development About This Book Create amazing modern day applications that run seamlessly across multiple platforms Implement multiple methodologies by creating different apps with dynamic features This unique project-based guide will help you build your own websites efficiently Who This Book Is For This book is a must-have for web developers who want to stay on top of the latest trends in web app and site development. If you are a web developer who is already familiar with HTML, CSS, and functional JavaScript, and you want to learn the latest trends in web development, this is the book for you. What You Will Learn Find out how to create responsive websites Create websites using the principals of Flat design Create deep-dive sites using parallax scrolling Discover how to use Ajax in single-page applications Create responsive navigation with CSS and JavaScript Create responsive padding with the box model property In Detail The book delivers simple instructions on how to design and build modern Web using the latest trends in web development. You will learn how to design responsive websites, created with modern Flat User Interface design patterns, build deep-scrolling websites with parallax 3D effects, and roll-your-own single-page applications. Finally, you'll work through an awesome chapter that combines them all. Each chapter features actual lines of code that you can apply right away. Style and Approach Using real-world examples, Web Design Blueprints presents practical how-to projects for site enhancements, with a light-hearted, easy-to-understand tone. This book has individual projects that cumulate until you finally build a super-project at the end, using all the skills learned

Drawing on six case studies of wolf, grizzly bear, and mountain lion conservation in habitats stretching from the Yukon to Arizona, Large Carnivore Conservation argues that conserving and coexisting with large carnivores is as much a problem of people and governance-of reconciling diverse and sometimes conflicting values, perspectives, and organizations, and of effective decision making in the public sphere-as it is a problem of animal ecology and behavior. By adopting an integrative approach, editors Susan G. Clark and Murray B. Rutherford seek to examine and understand the interrelated development of conservation science, law, and policy, as well as how these forces play out in courts, other public institutions, and the field.In combining real-world examples with discussions of conservation and policy theory, Large Carnivore Conservation not only explains how traditional management approaches have failed to meet the needs of all parties, but also highlights examples of innovative, successful strategies and provides practical recommendations for improving future conservation efforts.

With the overwhelming amount of new information that bombards us each day, it is perhaps difficult to imagine a time when the widespread availability of the printed word was a novelty. In early nineteenth-century Britain, print was not novel-Gutenberg's printing press had been around for nearly four centuries-but printed matter was still a rare and relatively expensive luxury. All this changed, however, as publishers began employing new technologies to astounding effect, mass-producing instructive and educational books and magazines and revolutionizing how knowledge was disseminated to the general public.In Steam-Powered Knowledge, Aileen Fyfe explores the activities of William Chambers and the W. & R. Chambers publishing firm during its formative years, documenting for the first time how new technologies were integrated into existing business systems. Chambers was one of the first publishers to abandon traditional skills associated with hand printing, instead favoring the latest innovations in printing processes and machinery: machine-made paper, stereotyping, and, especially, printing machines driven by steam power. The mid-nineteenth century also witnessed dramatic advances in transportation, and Chambers used proliferating railway networks and steamship routes to speed up communication and distribution. As a result, his high-tech publishing firm became an exemplar of commercial success by 1850 and outlived all of its rivals in the business of cheap instructive print. Fyfe follows Chambers's journey from small-time bookseller and self-trained hand-press printer to wealthy and successful publisher of popular educational books on both sides of the Atlantic, demonstrating along the way the profound effects of his and his fellow publishers' willingness, or unwillingness, to incorporate these technological innovations into their businesses.

The Enduring Importance of Leo Strauss takes on the crucial task of separating what is truly important in the work of Leo Strauss from the ephemeral politics associated with his school. Laurence Lampert focuses on exotericism: the use of artful rhetoric to simultaneously communicate a socially responsible message to the public at large and a more radical message of philosophic truth to a smaller, more intellectually inclined audience. Largely forgotten after the Enlightenment, exotericism, he shows, deeply informed Strauss both as a reader and as a philosophic writer-indeed, Lampert argues, Strauss learned from the finest practitioners of exoteric writing how to become one himself.Examining some of Strauss's most important books and essays through this exoteric lens, Lampert reevaluates not only Strauss but the philosophers-from Plato to Halevi to Nietzsche-with whom Strauss most deeply engaged. Ultimately Lampert shows that Strauss's famous distinction between ancient and modern thinkers is primarily rhetorical, one of the great examples of Strauss's exoteric craft. Celebrating Strauss's achievements while recognizing one main shortcoming-unlike Nietzsche, he failed to appreciate the ramifications of modern natural science for philosophy and its public presentation-Lampert illuminates Strauss as having even greater philosophic importance than we have thought before.?

Abramo Basevi published his study of Verdi's operas in Florence in 1859, in the middle of the composer's career. The first thorough, systematic examination of Verdi's operas, it covered the twenty works produced between 1842 and 1857-from Nabucco and Macbeth to Il trovatore, La traviata, and Aroldo. But while Basevi's work is still widely cited and discussed-and nowhere more so than in the English-speaking world-no translation of the entire volume has previously been available. The Operas of Giuseppe Verdi fills this gap, at the same time providing an invaluable critical apparatus and commentary on Basevi's work. ?As a contemporary of Verdi and a trained musician, erudite scholar, and critic conversant with current and past operatic repertories, Basevi presented pointed discussion of the operas and their historical context, offering today's readers a unique window into many aspects of operatic culture, and culture in general, in Verdi's Italy. He wrote with precision on formal aspects, use of melody and orchestration, and other compositional features, which made his study an acknowledged model for the growing field of music criticism. Carefully annotated and with an engaging introduction and detailed glossary by editor Stefano Castelvecchi, this translation illuminates Basevi's musical and historical references as well as aspects of his language that remain difficult to grasp even for Italian readers.?Making Basevi's important contribution to our understanding of Verdi and his operas available to a broad audience for the first time, The Operas of Giuseppe Verdi will delight scholars and opera enthusiasts alike.

Before the hydrogen bomb indelibly associated radioactivity with death, many chemists, physicians, botanists, and geneticists believed that radium might hold the secret to life. Physicists and chemists early on described the wondrous new element in lifelike terms such as "e;decay"e; and "e;half-life,"e; and made frequent references to the "e;natural selection"e; and "e;evolution"e; of the elements. Meanwhile, biologists of the period used radium in experiments aimed at elucidating some of the most basic phenomena of life, including metabolism and mutation.From the creation of half-living microbes in the test tube to charting the earliest histories of genetic engineering, Radium and the Secret of Life highlights previously unknown interconnections between the history of the early radioactive sciences and the sciences of heredity. Equating the transmutation of radium with the biological transmutation of living species, biologists saw in metabolism and mutation properties that reminded them of the new element. These initially provocative metaphoric links between radium and life proved remarkably productive and ultimately led to key biological insights into the origin of life, the nature of heredity, and the structure of the gene. Radium and the Secret of Life recovers a forgotten history of the connections between radioactivity and the life sciences that existed long before the dawn of molecular biology.

Fairy tales are supposed to be magical, surprising, and exhilarating, an enchanting counterpoint to everyday life that nonetheless helps us understand and deal with the anxieties of that life. Today, however, fairy tales are far from marvelous-in the hands of Hollywood, they have been stripped of their power, offering little but formulaic narratives and tame surprises.?If we want to rediscover the power of fairy tales-as Armando Maggi thinks we should-we need to discover a new mythic lens, a new way of approaching and understanding, and thus re-creating, the transformative potential of these stories. In Preserving the Spell, Maggi argues that the first step is to understand the history of the various traditions of oral and written narrative that together created the fairy tales we know today. He begins his exploration with the ur-text of European fairy tales, Giambattista Basile's The Tale of Tales, then traces its path through later Italian, French, English, and German traditions, with particular emphasis on the Grimm Brothers' adaptations of the tales, which are included in the first-ever English translation in an appendix. Carrying his story into the twentieth century, Maggi mounts a powerful argument for freeing fairy tales from their bland contemporary forms, and reinvigorating our belief that we still can find new, powerfully transformative ways of telling these stories.

The Critique of Pure Reason-Kant's First Critique-is one of the most studied texts in intellectual history, but as Alfredo Ferrarin points out in this radically original book, most of that study has focused only on very select parts. Likewise, Kant's oeuvre as a whole has been compartmentalized, the three Critiques held in rigid isolation from one another. Working against the standard reading of Kant that such compartmentalization has produced,?The Powers of Pure Reason?explores forgotten parts of the First Critique in order to find an exciting, new, and ultimately central set of concerns by which to read all of Kant's works. ?Ferrarin blows the dust off of two egregiously overlooked sections of the First Critique-the Transcendental Dialectic and the Doctrine of Method. There he discovers what he argues is the Critique's greatest achievement: a conception of the unity of reason and an exploration of the powers it has to reach beyond itself and legislate over the world. With this in mind, Ferrarin dismantles the common vision of Kant as a philosopher writing separately on epistemology, ethics, and aesthetics and natural teleology, showing that the three Critiques are united by this underlying theme: the autonomy and teleology of reason, its power and ends. The result is a refreshing new view of Kant, and of reason itself.

In 1959, Virginia's Prince Edward County closed its public schools rather than obey a court order to desegregate. For five years, black children were left to fend for themselves while the courts decided if the county could continue to deny its citizens public education. Investigating this remarkable and nearly forgotten story of local, state, and federal political confrontation, Christopher Bonastia recounts the test of wills that pitted resolute African Americans against equally steadfast white segregationists in a battle over the future of public education in America.?Beginning in 1951 when black high school students protested unequal facilities and continuing through the return of whites to public schools in the 1970s and 1980s, Bonastia describes the struggle over education during the civil rights era and the human suffering that came with it, as well as the inspiring determination of black residents to see justice served. Artfully exploring the lessons of the Prince Edward saga, Southern Stalemate unearths new insights about the evolution of modern conservatism and the politics of race in America.

In the mid-Victorian era, liberalism was a practical politics: it had a party, it informed legislation, and it had adherents who identified with and expressed it as opinion. It was also the first British political movement to depend more on people than property, and on opinion rather than interest. But how would these subjects of liberal politics actually live liberalism?To answer this question, Elaine Hadley focuses on the key concept of individuation-how it is embodied in politics and daily life and how it is expressed through opinion, discussion and sincerity.These are concerns that have been absent from commentary on the liberal subject. Living Liberalism argues that the properties of liberalism-citizenship, the vote, the candidate, and reform, among others-were developed in response to a chaotic and antagonistic world. In exploring how political liberalism imagined its impact on Victorian society, Hadley reveals an entirely new and unexpected prehistory of our modern liberal politics. A major revisionist account that alters our sense of the trajectory of liberalism, Living Liberalism revises our understanding of the presumption of the liberal subject.

An enormous amount of literature exists on Greek law, economics, and political philosophy. Yet no one has written a history of trust, one of the most fundamental aspects of social and economic interaction in the ancient world. In this fresh look at antiquity, Steven Johnstone explores the way democracy and markets flourished in ancient Greece not so much through personal relationships as through trust in abstract systems-including money, standardized measurement, rhetoric, and haggling.Focusing on markets and democratic politics, Johnstone draws on speeches given in Athenian courts, histories of Athenian democracy, comic writings, and laws inscribed on stone to examine how these systems worked. He analyzes their potentials and limitations and how the Greeks understood and critiqued them. In providing the first comprehensive account of these pervasive and crucial systems, A History of Trust in Ancient Greece links Greek political, economic, social, and intellectual history in new ways and challenges contemporary analyses of trust and civil society.

For centuries, the writ of habeas corpus has served as an important safeguard against miscarriages of justice, and today?it remains at the center of some of the most contentious issues of our time-among them terrorism, immigration, crime, and the death penalty.?Yet, in recent decades, habeas has been seriously abused. In this book, Nancy J. King and Joseph L. Hoffmann argue that habeas should be exercised with greater prudence.Through historical, empirical, and legal analysis, as well as illustrative case studies, the authors examine the current use of the writ in the United States and offer sound reform proposals to help ensure its ongoing vitality in today's justice system. Comprehensive and thoroughly grounded in a modern understanding of habeas corpus, this informative book will be an insightful read for legal scholars and anyone interested in the importance of habeas corpus for American government.

From the colonial era to the present, the ever-shifting debate about America's prodigious population growth has exerted a profound influence on the evolution of politics, public policy, and economic thinking in the United States. In a remarkable shift since the late 1960s, Americans of all political stripes have come to celebrate the economic virtues of population growth. As one of the only wealthy countries experiencing significant population growth in the twenty-first century, the United States now finds itself at a demographic crossroads, but policymakers seem unwilling or unable to address the myriad economic and environmental questions surrounding this growth.From the founders' fears that crowded cities would produce corruption, luxury, and vice to the zero population growth movement of the late 1960s to today's widespread fears of an aging crisis as the Baby Boomers retire, the American population debate has always concerned much more than racial composition or resource exhaustion, the aspects of the debate usually emphasized by historians. In The State and the Stork, Derek Hoff draws on his extraordinary knowledge of the intersections between population and economic debates throughout American history to explain the many surprising ways that population anxieties have provoked unexpected policies and political developments-including the recent conservative revival. At once a fascinating history and a revelatory look at the deep origins of a crucial national conversation, The State and the Stork could not be timelier.

In Mastering the Niger, David Lambert recalls Scotsman James MacQueen (1778-1870) and his publication of A New Map of Africa in 1841 to show that Atlantic slavery-as a practice of subjugation, a source of wealth, and a focus of political struggle-was entangled with the production, circulation, and reception of geographical knowledge. The British empire banned the slave trade in 1807 and abolished slavery itself in 1833, creating a need for a new British imperial economy. Without ever setting foot on the continent, MacQueen took on the task of solving the "e;Niger problem,"e; that is, to successfully map the course of the river and its tributaries, and thus breathe life into his scheme for the exploration, colonization, and commercial exploitation of West Africa.?Lambert illustrates how MacQueen's geographical research began, four decades before the publication of the New Map, when he was managing a sugar estate on the West Indian colony of Grenada. There MacQueen encountered slaves with firsthand knowledge of West Africa, whose accounts would form the basis of his geographical claims. Lambert examines the inspirations and foundations for MacQueen's geographical theory as well as its reception, arguing that Atlantic slavery and ideas for alternatives to it helped produce geographical knowledge, while geographical discourse informed the struggle over slavery.

In the spring of 1915, Chicagoans elected the city's first black alderman, Oscar De Priest. In a city where African Americans made up less than five percent of the voting population, and in a nation that dismissed and denied black political participation, De Priest's victory was astonishing. It did not, however, surprise the unruly group of black activists who had been working for several decades to win representation on the city council.Freedom's Ballot?is the history of three generations of African American activists-the ministers, professionals, labor leaders, clubwomen, and entrepreneurs-who transformed twentieth-century urban politics. This is a complex and important story of how black political power was institutionalized in Chicago in the half-century following the Civil War. Margaret Garb explores the social and political fabric of Chicago, revealing how the physical makeup of the city was shaped by both political corruption and racial empowerment-in ways that can still be seen and felt today.